<template>
  <div class="article-detail__container">
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />

    <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{ artObj.title }}</h1>

      <!-- 用户信息 -->
      <van-cell center :title="artObj.aut_name" :label="artObj.pubdate">
        <template #icon>
          <img :src="artObj.aut_photo" alt="" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button type="info" size="mini" v-if="artObj.is_followed"
             @click="followOrUnFollowFn(true)"  >已关注</van-button
            >
            <van-button icon="plus" type="info" v-else size="mini" plain
            @click="followOrUnFollowFn(false)"    >关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box">
       <van-button
                icon="good-job"
                type="danger"
                size="small"
                v-if="artObj.attitude === 1"
                @click="loveFn(false)"
                >已点赞</van-button>
    <van-button
                v-else
                @click="loveFn(true)"
                icon="good-job-o"
                type="danger"
                plain
                size="small"
                >点赞</van-button>
      </div>
    </div>
    <comment></comment>
  </div>
</template>

<script>
import { Toast } from 'vant'
import comment from './Comment.vue'

import { getArticleDetaiAPI, followAutAPI, unfollowAutAPI, articleLikeAPI, articleDisLikeAPI } from '@/api/article'
export default {
  data () {
    return {
      artObj: {}
    }
  },
  async created () {
    const resp = await getArticleDetaiAPI({
      id: this.$route.query.art_id
    })
    console.log(resp)
    this.artObj = resp.data
  },
  methods: {
    followOrUnFollowFn (flag) {
      /*
      flag: true, 表示点的是已关注按钮，取关
      flag: false, 表示点的是关注按钮，关注
      */
      try {
        // 1. 同步到后台
        flag ? unfollowAutAPI({
          autId: this.artObj.aut_id
        })
          : followAutAPI({
            autId: this.artObj.aut_id
          })
        // 2. 修改vue变量
        this.artObj.is_followed = !this.artObj.is_followed
        Toast.success(flag ? '取关成功' : '关注成功')
      } catch (e) {
        Toast.fail(flag ? '取关失败' : '关注失败')
      }
    },
    async loveFn (bool) {
      if (bool === true) { // 用户点在了点赞按钮上
        // 业务 => 点赞文章
        // 显示 => 已点赞按钮
        this.artObj.attitude = 1
        await articleLikeAPI({
          target: this.$route.query.aid
        })
      } else { // 用户点在了已点赞按钮上
        // 业务 => 取消点赞文章
        // 显示 => 点赞按钮
        this.artObj.attitude = -1
        await articleDisLikeAPI({
          artId: this.$route.query.aid
        })
      }
    }
  },
  components: {
    comment
  }

}
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
